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第 48 卷第 6 期 中南大学学报(自然科学版) Vo l . 4 8 No.6
2017 年 6 月 Journal of Central South University (Science and Technology) June 2017
DOI: 10.11817/j.issn.1672−7207.2017.06.018
混合译码放大转发的增强选择策略及性能分析
章坚武
1
,蒋静
1
,包建荣
1, 2
,姜斌
1
,刘超
1
(1. 杭州电子科技大学 通信工程学院,浙江 杭州,310018;
2. 东南大学 移动通信国家重点实验室,江苏 南京,210096)
摘要:为了解决无线协作通信中放大转发方案的噪声放大和译码转发方案的错误传播问题,在现有混合译码放大
转发方案基础上,提出一种增强选择的混合译码放大转发策略。研究结果表明:该策略不仅提高了混合译码放大
转发系统的频谱效率,而且其误比特率和中断性能也比增强选择放大转发方案有较大改善:当平均误比特率为 10
−5
时,其性能比增强选择放大转发方案提高了约 1 dB;当中断概率为 10
−2
时,其性能比混合译码放大转发及增强选
择放大转发方案分别提高了约 1.2 dB 和 0.7 dB。
关键词:增强选择;混合译码放大;误比特率;中断概率;频谱效率
中图分类号:TN929.5 文献标志码:A 文章编号:1672−7207(2017)06−1545−07
Incremental selection strategy of hybrid decode-amplify
forward with performance analysis
ZHANG Jianwu
1
, JIANG Jing
1
, BAO Jianrong
1, 2
, JIANG Bin
1
, LIU Chao
1
(1. School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;
2. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China)
Abstract: In order to solve the problems of the noise amplification in amplify-and-forward scheme and the error
propagation in decode-and-forward scheme, in the wireless cooperative communication systems, an incremental selection
hybrid decode-amplify forward strategy was proposed based on current hybrid decode-amplify forward method. The
results show that the proposed method can improve the spectrum efficiency of the hybrid decode-amplify forward system.
In addition, the bit error rate (BER) and outage performance of the proposed scheme quite outperform that of the current
incremental selection amplify forward scheme as follows. At an average BER of 10
−5
, it obtains about 1 dB performance
gain than incremental selection amplify forward scheme. And the outage performance improves about 1.2 dB and 0.7 dB
at outage probability of 10
−2
, compared with the current hybrid decode-amplify forward scheme and incremental selection
amplify forward scheme, respectively.
Key words: incremental selection; hybrid decode-amplify forward; bit error rate; outage probability; spectrum efficiency
多输入多输出(MIMO)技术可大幅提高无线通信
有效性。但受限于尺寸、功率、复杂度等因素,大多
无线通信系统不能直接采用多天线技术。为了使
MIMO 技术实用化,出现了协作通信技术
[1]
,并迅速
收稿日期:2016−09−23;修回日期:2016−12−07
基金项目(Foundation item):浙江省自然科学基金资助项目(LZ14F010003);国家自然科学基金资助项目(61471152);东南大学移动通信国家重点
实验室开放研究基金资助项目(2014D02);浙江省公益性技术应用研究计划资助项目(2015C31103);中国博士后科学基金资助项目
(2014M561555)(Project (LZ14F010003) supported by the Zhejiang Provincial Natural Science Foundation of China; Project (61471152) supported
by the National Natural Science Foundation of China; Project (2014D02) supported by the Open Research Fund of National Mobile
Communications Research Laboratory, Southeast University of China; Project (2015C31103) supported by the Zhejiang Provincial Science and
Technology Plan Project of China; Project (2014M561555) supported by the China Postdoctoral Science Foundation)
通信作者:包建荣,博士,副教授,从事空间无线通信与编码研究;E-mail: baojr@hdu.edu.cn